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Somewhat true...
It has to do with how the wing tanks get air to replace
the outgoing gas. On some, the header overflow goes to only one
wing. Therefore, you need vented wing caps.
Later designs/modifications have the overflow line go
to both wings. This means the header tank provides the source of air for
both wing tanks and so they should use unvented caps on the
wings.
I believe there is a 3rd configuration as well. I
think all 3 systems are in one of the service bulletins/information
bulletins... I saw it somewhere recently.
- Jason
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Wednesday, March 15, 2006 3:38 PM
To: [email protected]
Subject: [COUPERS-FLYIN] Re: Digest list: Ercoupe Hangar Flying
----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
It is my understanding that only the fuselage tank is to be vented on later model 415 Ercoupes.
I have an E model and the wing tanks cannot be vented.
Lee Browning
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